DBH 8820 radial shaft seal — 156.2 x 185.4 x 16

DBH 8820 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 8820 and any equivalents.

The DBH 8820 is a radial shaft seal sized for a 156.20 mm shaft, a 185.40 mm housing bore and a 16.00 mm height, built to design A 137. Its job is to hold lubricant in place and keep contaminants out where a rotating shaft passes through a stationary housing. Pumps, gearboxes and motors of industrial scale are the usual homes for a seal this size.

Reading the code is straightforward: DBH names the line, 8820 identifies the item, and design A 137 tells you which construction inside that line you are looking at. The three measurements travel together as shaft 156.20 mm, housing 185.40 mm, width 16.00 mm. Those numbers decide whether the part drops into your equipment, so a mismatch on any one of them means it will neither seat correctly nor seal.

You will typically run into this size on heavy transmission and pumping duty: centrifugal pumps, gearboxes, large electric motors, conveyor rollers and machinery that runs continuously. In each case the seal does two things at once, retaining the oil or grease on the inside while blocking dust, water and particles on the outside, which is what protects bearings and gears from premature wear.

Before fitting, inspect the shaft for burrs or deep scoring, coat the lip with lubricant, and press the seal in square to the shaft. Beyond the three dimensions, the working conditions matter just as much: surface speed, operating temperature and the fluid being sealed. Where pressure, vibration or heavy contamination is present, a reinforced design or a different elastomer may be the better route.

For an equivalent, the fastest path is to send code 8820 together with your current shaft and housing measurements. From there we can locate a same-category alternative or a combination that fits without touching the machining. Seals from other manufacturers and full sets for a specific machine are also worth asking about. Quotes are handled by WhatsApp or email at MR Industrial Accessories LLC, and the team can suggest equivalents and help with selection.